Digital Enamel Rater By Canneed Instrument (Hk) Limited

The CanNeed DER-4 Digital Enamel Rater is able to detect the exposed metal position more easily compare to the former models. The reformative electronic design makes it more sensitive, reliable and accurate. The anticorrosion characteristic of the enhanced can body support is ensured its durability. The film coated buttons are more durable and with better corrosion resistance.
Digital Enamel Rater is the industry standard. The new CanNeed Enamel Rater DER-4 instrument test the coverage of the enamel coating inside food and beverage cans, aerosol-cans and also different kinds of ends. It displays an index of the amount of metal exposed by incomplete enamel coverage on a clear, easily read digital LED.
The instrument applies a constant voltage across the can body and an electrode immersed in an electrolyte-filled can, and measures the resulting current. Test voltage is set at 6.3 VDC. Operating range is 0 to 300 milliamperes with accurate resolution within 0.1ma.
The instrument operates in industry standard 4 second mode, continuously, or can be programmed to measure any desired time. In 4-second mode, the display shows the reading only at 4 seconds. In continuous mode the reading is displayed beside elapsed time with the 4-second reading automatically stored in memory for recall. A simple and foolproof calibration self-test verifies correct, accurate operation.